6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
/*
* Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
#ifndef SHARE_VM_PRIMS_JNICHECK_HPP
#define SHARE_VM_PRIMS_JNICHECK_HPP
#ifndef KERNEL
#include "runtime/thread.hpp"
#endif
extern "C" {
// Report a JNI failure caught by -Xcheck:jni. Perform a core dump.
// Note: two variations -- one to be called when in VM state (e.g. when
// within IN_VM macro), one to be called when in NATIVE state.
// When in VM state:
static void ReportJNIFatalError(JavaThread* thr, const char *msg) {
tty->print_cr("FATAL ERROR in native method: %s", msg);
thr->print_stack();
os::abort(true);
}
}
//
// Checked JNI routines that are useful for outside of checked JNI
//
class jniCheck : public AllStatic {
public:
static oop validate_handle(JavaThread* thr, jobject obj);
static oop validate_object(JavaThread* thr, jobject obj);
static Klass* validate_class(JavaThread* thr, jclass clazz, bool allow_primitive = false);
static void validate_class_descriptor(JavaThread* thr, const char* name);
static void validate_throwable_klass(JavaThread* thr, Klass* klass);
static void validate_call_object(JavaThread* thr, jobject obj, jmethodID method_id);
static void validate_call_class(JavaThread* thr, jclass clazz, jmethodID method_id);
static Method* validate_jmethod_id(JavaThread* thr, jmethodID method_id);
};
#endif // SHARE_VM_PRIMS_JNICHECK_HPP